ISSUE:

Some vehicles equipped with 4.6L, 5.4L, and 6.8L 3-valve engines built between 1/11/2006 and 2/14/2006 may exhibit a loud ticking noise in the valve train area. This may be caused by a stuck/collapsed lash adjuster.

ACTION:

Verify engine build date, isolate, and replace any stuck/collapsed lash adjuster by following the Service Procedure.

SERVICE PROCEDURE

Check date code on the engine, located on the engine timing cover.

Date code between 1/11/2006 and 2/14/2006, proceed to Step 2.

Date code NOT between 1/11/2006 and 2/14/2006, this TSB does not apply, perform normal diagnostics.

Isolate the source of the noise to the cam cover on either Bank 1 or Bank 2. If the noise is not isolated to either cam cover, this TSB does not apply. Follow normal Workshop Manual (WSM) procedures for additional diagnostics.

Remove the appropriate cam cover.

Check for stuck/collapsed lash adjuster(s) by placing the cam lobe on the base circle and inspecting for loose cam followers as a result of the lash adjuster plunger being bottomed out.

NOTE:

A COLLAPSED LASH ADJUSTER WILL RESULT IN EXCESSIVE CLEARANCE BETWEEN THE LASH ADJUSTER AND THE CAM FOLLOWER.

DEALER CODING

BASIC PART NO.

CONDITION CODE

6500

69

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company’s on-line technical resources.